298 



THE RABBIT 



the elongated condyle, which articulates with the under surface of the zygomatic 

 process of the squamosal. 



Make three drawings showing dorsal, ventral, and lateral views of the skull. 



Lacrimal 



Nasal process of 

 PremaxiUa 



Supraorbital process 



Orbitosphenoid 

 Frontal 



Nasal 



Supraoccipital 



Fremaxilla 



. ^ 'j^^-g-Paroccipital process 



/ External pterygoid *"* 



i^jS^- Orbital process Jugal P''°'^*»f_-ipr^ 



J-Angular process 



Fiii. 97 The Skull of the Rabbit (Lepus cunicuhis). Lateral view. 



B. The Vertebral Column. 



The vertebral column or backbone is divided into five regions, namely, the 

 cervical, thoracic, lumbar, sacral, and caudal. The centra of the vertebrse have 

 thin epiphyses at their ends ; and between the centra there are cartilaginous 

 intervertebral discs. 



1. The Cervical or Neck Region. 



There are seven cervical vertebrse. Typicalty they have short centra and 

 small spines. They may be readily recognised by the character of each trans- 

 verse process, which consists of a rib fused with the vertebra and is pierced 

 by a foramen through which the vertebral artery passes, so that a continuous 

 vertebra- arterial canal is thus formed. 



(a) The Atlas. 



This is the first cervical vertebra. It is ring-shaped, and its lower portion^is 



Neural spine 



Neural spine 



Neural canal 



Transverse process 



Facet for Odontoid 

 Process of Axis 



Facet for Occipital 

 Condyle of Skull 



B. 



Fig. 98. — A. Dorsal view ; and B. Anterior view of the ^tlas Vertebra of the Rabbit. 



